public static void FrameRange(float startTime, float endTime, WindowState state)
{
if (startTime > endTime)
{
return;
}
var halfDuration = endTime - Math.Max(0.0f, startTime);
if (halfDuration > 0.0f)
{
state.SetTimeAreaShownRange(Mathf.Max(-10.0f, startTime - (halfDuration * 0.1f)),
endTime + (halfDuration * 0.1f));
}
else
{
// start == end
// keep the zoom level constant, only pan the time area to center the item
var currentRange = state.timeAreaShownRange.y - state.timeAreaShownRange.x;
state.SetTimeAreaShownRange(startTime - currentRange / 2, startTime + currentRange / 2);
}
TimelineZoomManipulator.InvalidateWheelZoom();
state.Evaluate();
}
public static void FrameItems(WindowState state, IEnumerable <ITimelineItem> items)
{
if (items == null || !items.Any() || state == null)
{
return;
}
// if this is called before a repaint, the timeArea can be null
var window = state.editorWindow as TimelineWindow;
if (window == null || window.timeArea == null)
{
return;
}
var start = (float)items.Min(x => x.start);
var end = (float)items.Max(x => x.end);
var timeRange = state.timeAreaShownRange;
// nothing to do
if (timeRange.x <= start && timeRange.y >= end)
{
return;
}
var ds = start - timeRange.x;
var de = end - timeRange.y;
var padding = state.PixelDeltaToDeltaTime(15);
var d = Math.Abs(ds) < Math.Abs(de) ? ds - padding : de + padding;
state.SetTimeAreaShownRange(timeRange.x + d, timeRange.y + d);
}
protected override bool OnFinish(Event evt, WindowState state, Rect rect)
{
var x = state.PixelToTime(rect.xMin);
var y = state.PixelToTime(rect.xMax);
state.SetTimeAreaShownRange(x, y);
return(true);
}
public static void Frame(WindowState state, double start, double end)
{
var timeRange = state.timeAreaShownRange;
// nothing to do
if (timeRange.x <= start && timeRange.y >= end)
{
return;
}
var ds = (float)start - timeRange.x;
var de = (float)end - timeRange.y;
var padding = state.PixelDeltaToDeltaTime(15);
var d = Math.Abs(ds) < Math.Abs(de) ? ds - padding : de + padding;
state.SetTimeAreaShownRange(timeRange.x + d, timeRange.y + d);
}
static void DoPanScroll(WindowState state)
{
if (!state.playing)
{
return;
}
var paddingDeltaTime = state.PixelDeltaToDeltaTime(WindowConstants.autoPanPaddingInPixels);
var showRange = state.timeAreaShownRange;
var rightBoundForPan = showRange.y - paddingDeltaTime;
if (state.editSequence.time > rightBoundForPan)
{
var leftBoundForPan = showRange.x + paddingDeltaTime;
var delta = rightBoundForPan - leftBoundForPan;
state.SetTimeAreaShownRange(showRange.x + delta, showRange.y + delta);
}
}
static void DoZoom(float zoomFactor, WindowState state, Vector2 refRange, float focalTime)
{
const float kMinRange = 0.05f; // matches zoomable area.
var s = zoomFactor;
var t = focalTime;
if (s <= 0)
{
return;
}
var x = (refRange.x + t * (s - 1)) / s;
var y = (refRange.y + t * (s - 1)) / s;
// don't set it if we reach the limit or panning happens
if (Math.Abs(x - y) > kMinRange)
{
// Zoomable area does not protect 100% against crazy values
state.SetTimeAreaShownRange(Math.Max(x, 0), Math.Min(y, WindowState.kMaxShownTime));
}
}
